From this question:
We establish that Jabba did kill Jedi back in the old days (or at least claimed that he did).
But how? Jedi are pretty handy at fighting and can mind-control their way out of situations in the same way that Luke (a novice at that time) escaped from Jabba's palace.
Is there any evidence to show how Jabba managed to do this, or did he simply get away with lying about it? I'm also willing to accept evidence showing that Jabba successfully ordered the deaths of one or more Jedi.
And yes, I'm somewhat aware of the irony that such a powerful group of beings somehow managed to completely die out through no fault of their own...